newb here: picked up used Indigo G3 iMAC 500mhz w256mbRAM, OS 9.2. (early 2001?) firmware appears to be 4.1.9 in open firmware screen Battery was low - replaced w/ new I do not have original disks Wanted to try linux Live CD so checked the following: optical drive reads any CDs when MAC OS 9.2 is running but optical drive is NOT available in Startup disk menu next day: Tried to boot off CD with "C" during boot - no luck Then tried "option"- but no CDdrive listed Today: "option" presents HD but instead of listing it as "m" it is now listed as "untitled" Now: boots into either alternating folder/? and MAC icon or to MAC icon but no further. I believe boot files have become corrupted, but I would expect to be able to select boot device. Have tried cmd-opt-P-R to reset PRAM "c" "opt" cmd-opt-O-F While in openfirmware tried these: reset-NVRAM set-defaults reset-all tried CUDA button HD appears to be good (no clicking) Any way to either boot from internal CDoptical drive or HD? As I have read further, this seems to be a problem (booting from CD) with iMACs Are there any command line options to set boot device? According to options in printenv there is boot-device listed as HD , but don't know how to change it. Any help appreciated.